158 citations · 164 across the 9 of their papers we have counts for
9 papers
Beyond Five Scale Heights: Composition- and Cloud-dependent Ariel Tier-2 Requirements for sub-Neptunes
Vigneshwaran Krishnamurthy, Nicolas B. Cowan, Misato Fukagawa +1
The Ariel Mission Candidate Sample (MCS) Tier-2 requirements provide a common screening reference by assuming a clear H/He atmosphere and a five-scale-height transmission signa…
HERMES: HiERarchical Modelling for Exoplanet Science
Wasi M. F. Naqvi, Nicolas B. Cowan
ESA's Ariel Space Mission will characterise the atmospheres of approximately 1000 exoplanets to quantify population-level trends. We present HERMES (HiERarchical Modelling for Exop…
Super-Earth masses and stellar abundances from NIRPS reveal tentative evidence for water-rich formation around M dwarfs
Drew Weisserman, Nicole Gromek, Ryan Cloutier +98
Tracing the compositional link between terrestrial super-Earths and their host stars provides clues to their dominant formation pathway. By constraining the stellar abundances of r…
On the Information Content of Ariel Transmission Spectra: Reassessing the Tier System
Michael Radica, Nicolas B. Cowan, Ryan Cloutier +1
The European Space Agency's Ariel mission will conduct a survey of the atmospheric properties of exoplanets around bright stars. The mission is nominally divided into three Tiers.…
TOI-4552 b: A new ultra-short period rocky world revealed by NIRPS and TESS
Avidaan Srivastava, René Doyon, François Bouchy +57
A particularly intriguing subclass of rocky exoplanets are the ultra-short period (USP) worlds that orbit their host stars in less than a day. These planets are particularly rare a…
Balancing Variety and Sample Size: Optimal Parameter Sampling for Ariel Target Selection
Emilie Panek, Alexander Roman, Katia Matcheva +2
Targeted astrophysical surveys are limited by the amount of telescope time available, which makes it impossible to observe every single object of interest. In order to maximize the…
Testing the Origin of Hot Jupiters with Atmospheric Surveys
Lina D'Aoust, Ben Coull-Neveu, Eve J. Lee +1
In spite of their long detection history, the origin of hot Jupiters remains to be resolved. While multiple dynamical evidence suggests high-eccentricity migration is most likely,…
Maximizing Ariel's Survey Leverage for Population-Level Studies of Exoplanets
Nicolas B. Cowan, Ben Coull-Neveu
ESA's Ariel mission will be uniquely suited to performing population-level studies of exoplanets. Most of these studies consist of quantifying trends between an Ariel-measured quan…
Characterizing Transiting Planet Atmospheres through 2025
N. B. Cowan, T. Greene, D. Angerhausen +13
[Abridged] We have only been able to comprehensively characterize the atmospheres of a handful of transiting planets, because most orbit faint stars. TESS will discover transiting…